The Pinedale Field drilling program primarily targets the upper Cretaceous Lance Pool in the Pinedale and Jonah Fields.
The Lance Pool includes sands of both the Lance and Mesaverde with total subsurface depths of approximately 12,000 to 14,000 feet in Pinedale and Jonah natural gas fields. This thick sequence of tight, over-pressured, gas-charged sands was deposited approximately 65 million years ago by a major braided river system, which drained across this area. As a result, over 5,000 feet of Lance sediments were deposited in certain parts of the area. The thickest accumulations of potential pay sands underlie the Pinedale. These types of plays are generally formed in the deep portions of sedimentary basins. The sands have porosity and permeability levels lower than normally associated with productive zones. Pressures from within the reservoir are greater than normal due to the gas migrating into the reservoir rock from a rich hydrocarbon source bed at rates exceeding those at which the gas can escape.
